Notorious Port Charles siblings Luke and Bobbie Spencer rarely mentioned their older sister, Patricia, until their childhood home was chosen to be the site of the A.J. Quartermaine Clinic. Whenever Bobbie mentioned Pat to Luke, he became extremely agitated. Luke's wife, Tracy, also noted Luke's extreme reaction to Pat's name and wondered if Luke's unstable mental health was somehow related to his older sister. Bobbie admitted that she had lost touch with Pat after Bobbie and Luke had left Port Charles to live in Florida because Pat had not joined them. Tracy hired a private investigator to track down Pat in hopes of helping Luke.

Eventually, the investigator uncovered a lead to Pat through her daughter, Valerie. From Valerie's clues, Tracy and Bobbie learned that Pat had multiple sclerosis and resided at a convalescence home. When the women reached Pat, they discovered that Luke was already there, and he threatened Pat, Bobbie, and Tracy at gunpoint. Luke's daughter, Lulu, also arrived, but only Tracy was able to break through to Luke. He was horrified by how he had treated the women and escaped while Pat revealed the traumatic event that had occurred in the house on Elm Street.

Pat told Bobbie, Tracy, and Lulu that several years before, her father Tim had been drunk once again and had turned his fists on the family. Luke had sent Bobbie up to her room for safety while he'd stood up to his father with a baseball bat. Their mother, Lena, had tried to intervene, but Luke had accidentally struck her in the head, and she'd died later that evening in the hospital. Pat had met her cousin Bill Eckert for the first time that night, and they'd arrived at the Elm Street home together and discovered that Luke had killed Tim with the baseball bat, as well, but had been unable to recall what had happened.

Together, Bill and Pat had hidden Tim's body in the wall of the basement and concocted a story in which Tim had deserted the family after he had killed his wife. Pat had sent Bobbie and Luke to live in Florida with their Aunt Ruby while she had gone to Philadelphia. She had feared that if she'd stayed with Luke and Bobbie, Luke would remember what he had done.

When Luke, Bobbie, and Pat reconnected in the present day at their former childhood home, Luke remembered what had transpired years earlier, and Pat apologized for her decision to cover up the truth. Luke was horrified by the realization that he had killed both his parents, but his sisters reminded him that he was not to blame. After the heartfelt family reunion, Luke left to receive medical care, and Valerie arrived to take Pat back to Oak Hill. However, Pat's heart gave out, and she passed away.